GB2104122A

GB2104122A - A device for bridging expansion joints in footpaths or parking decks

Info

Publication number: GB2104122A
Application number: GB08127750A
Authority: GB
Inventors: Gunter Buckenauer
Original assignee: Maurer Soehne GmbH and Co KG
Current assignee: Maurer Soehne GmbH and Co KG
Priority date: 1981-08-12
Filing date: 1981-09-15
Publication date: 1983-03-02
Also published as: NL190647B; EP0071669B1; NL190647C; ATE10762T1; EP0071669A1; GB2104122B; NL8104237A; DE3131804C1

Abstract

A device for bridging expansion joints in footpaths, parking decks or the like and involving a caulking strip, which bridges the joint and consists of a resiliently elastic material, has thickenings which have been pressed into cavities (18) in the joint edges, which cavities are open towards the joint, on opposite sides and which extend in the strip direction. On the strip (1) there are formed supporting faces (12), which point towards the joint and bear against corresponding internal faces (13) of the cavities (18), and on which there are integrally formed, at the end that is directed away from the joint, webs which end with a bulge (15). The bulge (15) is wedged between the thickening parts (10, 11) and thus keeps the supporting faces (12) in their abutting contact. (Fig. 2). <IMAGE>

Description

1 GC 2 104 12ZA 1,

SPECIFICATION Device for bridging expansion joints in footpaths, parking decks or the like.

The invention relates to a device for bridging 5expansion joints in footpaths, parking decks or the like and involving a caulking strip which consists 70 of a resiliently elastic material and has thickenings, which have been pressed into cavities in the joint edges, which cavities are open towards the joint, on opposite sides and extend in the strip direction and on which there are formed supporting faces, which point towards the joint and bear against corresponding inner faces of the cavities, and with which there are integrally formed, at the end that is directed away from the joint, webs which end in a bulge and which, in the installed position, are bent backwards towards the joint so as to wedge the respective thickening in the interior of the associated cavity.

A known device of this kind (German patent specification 28 08 386) involves a profiled caulking strip which is not passable and is thus confined in its application to very narrow joints.

An asymmetrical thickening which, with its supporting face, is pressed against the inner face of the joint edge cavity by the wedging effect of the bulge is sufficient as a fastening for caulking strips which are substantially free of vertical loads.

The task underlying the present invention is to provide a joint packing which will withstand limited traffic loads and which can be easily but securely anchored in corresponding cavities in the joint edges and can also be removed again.

According to the invention, this problem is solved in that the caulking strip is divided in the zone of each thickening, the webs being integrally formed with one of the thickening parts so that the bulge is wedged between the thickening parts and thereby keeps the supporting faces in their abutting contact.

Due to the wedging of the bulge between two thickening parts, there is provided a bilateral wedging effect since the thickening parts and the bulge consist of resiliently elastic material, so that a high degree of compression is attainable in the interior of the cavities in the joint edges. Such a connection of the caulking strip to the joint edges is not only capable of securing the connection against vertical forces; it is also particularly distinguished in that tensile forces transmitted by the packing strip can be absorbed which are not inconsiderable. This effect is further increased by the constructional form providing for the bulge, in the installed position, to bear against the insides of the thickening parts approximately opposite to the supporting faces or somewhat farther in the direction of the joint and furthermore for both thickening parts of each thickening to have supporting faces. It is precisely by these measures 125 that the bulge is wedged with the thickening parts to an even greater degree upon tensile loading, with the effect that the supporting faces are pressed even more firmly against the inner faces of the cavities in the joint edges.

In order to facilitate the buttoning of the thickenings into the cavities of the joint edges and for the facilitation of the connection to a caulking strip of any design, provision is made according to another proposal of the invention for the supporting faces and, correspondingly, the inner faces of the cavities in the joint edges to be obliquely inclined to the outside related to the joint centre. By this means, there comes about, if the caulking strip is designed as a hollow profile, a transition to the thickening parts which is oblique relative to the centre of the caulking strip, causing dirt gaps between the joint edges and the caulking strip to be avoided.

According to another proposal of the invention, such a caulking strip designed as a hollow profile has external and internal profile covers which are connected through ribs, the external profile cover extending flush with the roadway. In other words, the caulking strip is passable in the zone of the hollow profile. In order to prevent the external profile cover from swelling upwards when the joint is narrowed, provision is made according to the invention for the internal profile cover to be curved so as to bulge out towards the joint depth. The effect thus attained can be further improved in that some ribs extend approximately parallel to the plane of the joint gap, while other ribs extend therebetween diagonally from the top centre to the bottom outside. The diagonally extending ribs, in particular, stabilise the caulking strip hollow profile located between the joint edges in the sense that a completely flat formation of the caulking strip surface adjoining the road surface is provided in each joint position, which includes the joining of the joint edges. At the same time, the ribs improve the removal of the vertical loads towards the joint edge.

According to another further development of the invention, provision is made for the profile covers to form approximately right angles with the supporting faces. This means that, in accordance with the thickness of the hollow profile, the two profile covers obliquely converge laterally, the supporting faces, as already stated above, being inclined by extending approximately from the joint centre obliquely to the outside. Correspondingly formed are at the joint edges which have oblique claws adjoining the openings of the cavities. The internal claw is widened so as to support the internal profile cover.

All in all, the caulking strip according to the invention renders possible a water-tight connection of limited tensile strength to the joint edges, the fact that the thickening parts and the bulge are adapted in their size to the crosssectional shape of the associated joint cavity being of course of importance. The same applies to the length of the web between the associated thickening part and the bulge. Only in this way it is possible to meet both the requirement of an easy installation and the requirement of a firm and tight fit.

2 GB 2 104 122 A 2 An exemplified embodiment of the invention will hereinafter be explained with reference to the drawings, in which:

Figure 1 shows a cross section through a caulking strip in the non-installed state, Figure 2 shows the caulking strip of Figure 1 in a joint cross section while it is pressed into a cavity in the joint edge, and Figure 3 shows the caulking strip, also in a joint cross section, after it has been fully installed into 75 the joint edges.

Figure 1 shows a caulking strip 1 which preferably consists of a rubber-like material such as, for example, neoprene and is provided with an external profile cover 2 and an internal profile cover 3. The external profile cover 2, with its surface 4, is flush with the road surface 5 (see Figure 3) and the top 6 of the joint edge profiles 7.

The portion of the caulking strip 1 which bridges the joint gap is designed as a hollow profile with a ribbing between the external profile cover 2 and the internal profile cover 3. The ribbing comprises four ribs 8 which extend approximately vertically to the profile covers 2, 3, there being provided between an external rib and an internal rib 8 diagonal ribs 9 which extend diagonally downwards to the outside. The diagonal ribs 9 bring about a lateral force introduction into the joint edges; they furthermore prevent an upward swelling of the external profile cover 2 in its 95 central zone.

The lateral edges of the caulking strip each have a thickening which is divided into two parts and consists of an external thickening part 10 and an internal thickening part 11. Both thickening parts 10, 11 have supporting faces 12 which are disposed approximately vertically on the adjoining profile covers and are supported on corresponding internal faces 13 of the joint edge profiles 7 in the installed state of the caulking strip (see Figure 2).

The external thickening part 10 comprises a web 14 which is joined thereto and is provided with a bulge 15 at the end. As shown in Figure 1, the web 14 may from the outset be integrally formed with the thickening part 10 by being bent backwards towards the joint centre; but, in a variant not shown, it may be integrally formed by being stretched to the side and will only be bent backwards to the inside during the course of the installation. The internal thickening part 11 is more solidly designed that the external thickening part 10. The internal thickening part 11 has a contact-pressure surface 16 in the.direction of the external thickening part 10. Between this contact pressure surface 16 and the opposite inside 17 of the external profile cover 2, the bulge 15 is 120 wedged in in the installation state of the caulking strip shown in Figures 2 and 3. On the right-hand side of Figure 2, the connection of the lateral thickening of the caulking strip to the corresponding joint edge profile 7 has already been established. The bulge 15 has been compressed between the external thickening part and the internal thickening part 11, that is to say it is wedged with the insides of the hollow profile, namely with the inside 17 of the external profile cover 2, on the one hand, and with the contact-pressure surface 16 of the internal thickening part 11, on the other hand.

On the left-hand side of the illustration of Figure 2, there is shown the installation sequence. Firstly, the internal thickening part 11 is inserted into the cavity 18 in the joint edge with its supporting face 12 against the corresponding internal face 13 of the joint edge profile 7; thereafter, the external thickening part 10 is pressed with a pressing tool 27, whose end is applied to the supporting face 12 of the external thickening part 10, into the joint edge profile 7 cavity 18 free space that is left until the supporting face 12 snaps behind the corresponding joint edge profile 7 internal face 13 which adjoins the cavity 18. During this process, there is exerted on the web 14 a tension which results in a reliable wedging of the bulge 15 in the position shown in the zone of the right-hand joint edge of Figure 2.

Figure 3 shows the completely installed caulking strip with the concrete substructure 20 adjoining the joint 19 and the anchorage covering 21 which adjoins the joint edge profiles 7 and preferably consists of synthetic resin concrete and in which anchoring straps 22 of the joint edge profiles 7 are embedded.

The joint edge profiles 7 have unequally designed claws which adjoin the openings of the cavities 18. The external claw 23 has a relatively narrow front end 24, with which it rests on the top of the external profile cover 2. There is formed a relatively large angular space W of approximately 901 between the external profile cover 2 and the external claw 23. This angular space W prevents the permanent deposition of dirt or the penetration of dirt into the fastening zone between the thickening parts 10, 11 and the joint edge profile 7. The internal claw 26 of the joint edge profile 7 has an extended oblique bearing surface 25, on which the external zone of the internal profile cover 3 is supported. The bearing surface 25 thus improves the absorption of vertical loads by the caulking strip.

Claims

1. A device for bridging expansion joints in footpaths, parking decks or the like and involving a caulking strip which bridges the joint and consists of a resiliently elastic material and comprises thickenings which are pressed into cavities in the joint edges, which cavities are open towards the joint, on opposite sides and extend in the strip direction and on which there are formed supporting faces, which point towards the joint and bear against corresponding internal faces of the cavities, and with which there are integrally formed, at the end that is directed away from the joint, webs which end with a bulge and are bent backwards towards the joint in the installed position so as to wedge the thickenings in the interior of the associated cavity, characterised in that the caulking strip (1) is divided in the zone of 3 GB 2 104 122 A 3 each thickening, the webs (14) being integrally formed with one of the thickening parts (10) so that the bulge (15) is wedged between the thickening parts (10, 11) and thus keeps the supporting faces (12) in their abutting contact.

2. A device as claimed in claim 1, characterised in that, in the installed position, the bulge (15) bears against the insides (16, 17) of the thickening parts (10, 11) approximately opposite to the supporting faces (12) or somewhat farther in the direction of the joint.

3. A device as claimed in claim 1 or 2, characterised in that both thickening parts (10, 35 11) of each thickening have supporting faces (12).

4. A device as claimed in one of claims 1 to 3, characterised in that the supporting faces (12) and, correspondingly, the inner faces (13) of the cavities (18) of the joint edges are obliquely inclined to the outside, related to the joint centre.

5. A device as claimed in one of claims 1 to 4, characterised in that in the zone of the joint (1 g), the caulking strip (1) is designed as a hollow profile which has external and internal profile covers (2 and 3) which are connected through ribs (8, 9) the external profile cover (2) extending flush with the roadway.

6. A device as claimed in claim 5, characterised in that the internal profile cover (3) is curved bulgingly towards the joint depth.

7. A device as claimed in claim 5 or 6, characterised in that some ribs (8) extend approximately parallel to the plane of the joint gap and other ribs (9) extend therebetween diagonally from the top centre to the bottom outside.

8. A device as claimed in one of claims 1 to 7, characterised in that the profile covers (2, 3) form approximately a right angle with the supporting faces (12).

9. A device for bridging expansion joints in footaths, parking decks or the like substantially as hereinbefore described with reference to and as illustrated in the various figures of the accompanying drawings.

Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1983. Published by the Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained